Oliver perry and clark perry



@uitrit taten aiwt @frn vOLIVER PERRY AND CLARK PERRY, OF ORTONYILLE, MICHIGAN.

Leners Parent No. 74,716, ma February 18, 1868.

IMPROVEMENT IN GATES.

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TO ALL WHOM IT MAY OONOERN:

Be it known that we, OLIVER PERRY and CLARK PERRY, of Ortonville, in the county of Oakland, and in the State of Michigan, have invented 'certain new and useful mprovements in Gates; 'and do hereby declare that the following is a full, clear, and exact description thereof, reference beinghad to the accompanying drawings, and to the letters of reference marked thereon.

In the annexed drawings, making part of this specification, A represents the rear and B the front gatepost. The post A does not stand in a. vertical position, but inclined, its Vtopreccding to the rear. G H El represent the slats of the gate. The slats H II are pivotcd at their rear ends to one side4 of the postiA, andat or near their front ends to a cross-bar, I. The upper slat, G, is longer than the other slats ot' the gate, is pivotcd near its centre to post A, and is provided on its rear endwith a weight, P. This weight P is4 made heavy enough to more than balance the weight of the gate, so that, as soon as thevforirard end of the gate is released from post B, this weight bears down the rear end of slat G, thus throwing allthe slats up in almost a vertical position, folding the gate out of the Way, as is seen in Figure l. C represents a bar, which is secured to the front post, near its top, and crosswise of it.' At each end of this bar, at its under side, are two staples. A cord, K, which is attached at its centre to a latch, J, has its ends passed out to the ends of the bar,'and through its staples. The object of this cord is to operate the latch J, so as to release theV forward end of the gate. A similar bar, D, is secured to the rear post- A. This bar has staples in its ends also,'and itis provided with a cord, L, which is attached at its centre to the weight P, and which has its ends passed through the staples in the end of the bar. An arm, E, projects from 'the back side of the post A, and in its outer end are two pulleys. The cord L passes around these pulleys, onliitsway to the staples in the end of bar D. 'The object ot' cord L is to raise the weight P, so that the gate will fall to-a horizontalposition and catch in the latch J. When the gate is shut, and a person approaches who wishes to pass through, he pulls one end of cord K, which. releases 4the gate, so that the weight P can cause it to 'fold up. After passing through, he pulls one end of cord L, so as to raise the weight P., allowing the gate to fall, so that it can bc caught and heldby its latch.

We are aware that the construction of thc gate is not new; also, that a gate operated by movable levers and cords has been known. Our gate being more simple in construction and economical- We claim the combination of the gate, as constructed, stationary arms O, D, and E, and cords K L, all. operating as set forth.

In testimony that We claim the foregoing, we have hereunto sct our hands, this 5th day of November, 1867.

OLIVER PERRY, CLARK PERRY. Witnesses Gr. B. BARTLETT, JOHN II. Dnnssnn. 

